Lego

How many Lego bricks can be stacked one on top of the other before one at the bottom breaks?

Engineers at the Open University have finally come up with the solution to the conundrum and, here's a clue, its probably going to be bigger than you think.

Full Story:
http://www.dailymail.co.uk/sciencetech/article-2242973/How-Lego-bricks-stacked-the-breaks.html